Pillow



FIG. 1 is a top, front, and left side perspective view of a pillow showing my new design;

FIG. 2 is a bottom, front, and right side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a pillow, as shown. 